8 major Google algorithm updates, explained
Almost every day, Google
introduces changes to its ranking algorithm. Some are tiny tweaks; others
seriously shake up the SERPs. This cheat sheet will help you make sense of the
most important algo changes and penalties rolled out in the recent years, with
a brief overview and SEO advice on each.
But before we start, let’s do something fun. What if you could see
which of the updates impacted your organic traffic, and in what way? Surprise
surprise, you can, with a tool called Rank Tracker. All you need to do is launch
Rank Tracker and create a project for your site. Then, click the Update
Traffic button in Rank Tracker’s top menu, and enter your
Google Analytics credentials to sync your account with the tool. In the lower
part of your Rank Tracker dashboard, switch to Organic Traffic:
Did any of your traffic
changes correlate with Google’s updates? Let’s find out what each of the
updates was about and how to adjust.
1. Panda
Launch
date: February 24, 2011
Hazards: Duplicate, plagiarized or thin content; user-generated spam; keyword stuffing
Hazards: Duplicate, plagiarized or thin content; user-generated spam; keyword stuffing
How
it works: Panda assigns a
so-called “quality score” to web pages; this score is then used as a ranking
factor. Initially, Panda was a filter rather than part of Google’s ranking
algo, but in January 2016, it was officially incorporated into the core
algorithm. Panda rollouts have become more frequent, so both penalties and
recoveries now happen faster.
How
to adjust: Run regular site checks
for content duplication, thin content and keyword stuffing. To do that, you’ll
need a site crawler, like SEO PowerSuite’s Website Auditor.
To check for instances of
external content duplication, use a plagiarism checker like Copyscape.
If you have an e-commerce site and cannot afford to have 100
percent unique content, try to use original images where you can, and utilize
user reviews to make product descriptions stand out from the crowd. For more
tips on content auditing, jump to this six-step guide.
2. Penguin
Launch
date: April 24, 2012
Hazards: Spammy or irrelevant links; links with over-optimized anchor text
Hazards: Spammy or irrelevant links; links with over-optimized anchor text
How it
works: Google Penguin’s objective is to down-rank sites whose links
it deems manipulative. Since late 2016, Penguin has been part of Google’s core
algorithm; unlike Panda, it works in real time.
How to
adjust: Monitor your link profile’s growth and run regular audits with a
backlink checker like SEO
SpyGlass. In the tool’s Summary dashboard,
you’ll find a progress graph for your link profile’s growth. Look out for any
unusual spikes: those are reason enough to look into the backlinks you’ve
unexpectedly gained.
The stats that we know
Penguin takes into account are incorporated into SEO SpyGlass’s Penalty
Risk formula. To check for penalty risks, go to the Linking Domains dashboard,
navigate to the Link Penalty Risks tab, select your links, and click Update Penalty Risk. When the check is
complete, check with the Penalty Risk column, and make sure to look into every link with
a score over 50 percent.
3.
Hummingbird
Launch
date: August 22, 2013
Hazards: Keyword
stuffing; low-quality content
How it
works: Hummingbird helps Google better interpret search queries and
provide results that match searcher intent (as opposed to the individual
terms within the query). While keywords continue to be important,
Hummingbird makes it possible for a page to rank for a query even if it doesn’t
contain the exact words the searcher entered. This is achieved with the help of
natural language processing that relies on latent semantic indexing,
co-occurring terms and synonyms.
How to
adjust: Expand your keyword research and focus on concepts, not
keywords. Carefully research related searches, synonyms and co-occurring
terms. Great sources of such ideas are Google Related Searches and Google
Autocomplete. You’ll find all of them incorporated into Rank Tracker’s Keyword Research module.
Hazards: Keyword stuffing; low-quality content
Use these insights to understand
your audience’s language better and diversify your content. By creating
comprehensive content that satisfies searcher intent, you’ll win both in terms
of engagement and SEO. We’ll look at comprehensiveness in more detail later in
this post when we discuss RankBrain.
4. Pigeon
Launch
date: July 24, 2014 (US); December 22, 2014 (UK, Canada, Australia)
Hazards: Poor on- and off-page SEO
Hazards: Poor on- and off-page SEO
How it
works: Pigeon affects those searches in which the user’s location
plays an important part. The update created closer ties between the local
algorithm and the core algorithm: traditional SEO factors are now used to
rank local results.
How to
adjust: Invest effort into on- and off-page SEO. A good starting point is
running an on-page analysis with WebSite Auditor. The tool’s Content
Analysis dashboard will give you a good idea about the aspects of on-page
optimization you need to focus on.
A good way to start with off-page SEO is getting listed in
relevant business directories. Not only do those act like backlinks, helping
your site rank; they rank well in Google themselves. You can easily find
quality directories and reach out to webmasters asking to get listed with LinkAssistant.
Just click Look for Prospects,
select Directories, and enter your keywords. It’s a good idea to specify
category keywords plus your location (e.g., “dentist Denver”). In a moment, the
tools will return a list of relevant directories in your niche, along with the
site owner’s email addresses.
5. Mobile
Launch
date: April 21, 2015
Hazards: Lack of a mobile version of the page; poor mobile usability
Hazards: Lack of a mobile version of the page; poor mobile usability
How it
works: Google’s Mobile Update (aka Mobilegeddon) ensures that
mobile-friendly pages rank at the top of mobile search, while pages not
optimized for mobile are filtered out from the SERPs or seriously down-ranked.
How to
adjust: Go mobile and focus on speed and usability. Google’s
mobile-friendly test will help you see which aspects of your page’s mobile
version need to be improved. The test in integrated into WebSite Auditor so you can check your
pages’ mobile friendliness quickly. You’ll find it in Content
Analysis > Page Audit, under the Technical factors tab.
6.
RankBrain
Launch
date: October 26, 2015
Hazards: Lack
of query-specific relevance features; shallow content; poor UX
How it works: RankBrain
is part of Google’s Hummingbird algorithm. It is a machine learning system that
helps Google understand the meaning behind queries, and serve
best-matching search results in response to those queries. Google calls RankBrain
the third most important ranking factor. While we don’t know the ins and outs
of RankBrain, the general opinion is that it identifies relevance features for
web pages ranking for a given query, which are basically query-specific ranking
factors.
How to
adjust: Optimize content for relevance and comprehensiveness with the help
of competitive analysis. With the help of WebSite Auditor‘s TF-IDF tool, you can
discover relevant terms and concepts used by a large number of your top-ranking
competitors: those are a brilliant way to diversify your content.
Hazards: Lack of query-specific relevance features; shallow content; poor UX
7.
Possum
Launch
date: September 1, 2016
Hazards: Tense
competition in your target location
How it
works: The Possum update ensured that local results vary more depending
on the searcher’s location: the closer you are to a business’s address,
the more likely you are to see it among local results. Possum also resulted in
greater variety among results ranking for very similar queries, like “dentist
denver” and “dentist denver co.” Interestingly, Possum also gave a boost to
businesses located outside the physical city area.
How to
adjust: Expand your keyword list and do location-specific rank
tracking. Local businesses now need to be targeting more keywords than
they used to, due to the volatility Possum brought into the local SERPs. As you
check your rankings, make sure you’re doing this from your target location (or,
better yet, a bunch of them). You can do this in Rank Tracker under Preferences >
Preferred Search Engines. Click Add Custom next to Google. Next, specify
your preferred location — you can make it as specific as a street address.
Hazards: Tense competition in your target location
8.
Fred
Launch
date: March 8, 2017
Hazards: Thin,
affiliate-heavy or ad-centered content
How it
works: The latest of Google’s confirmed updates, Fred targets websites
that violate Google’s webmaster guidelines. The majority of affected
sites are blogs with low-quality posts that appear to be
created mostly for the purpose of generating ad revenue.
How to
adjust: Review Google
Search Quality Guidelines and watch out for thin
content. If you show ads, make sure the pages they are found on are
high-quality and offer relevant, ample information. This is basically it: Don’t
try to trick Google into thinking your page is about something when it really
is a gateway page full of affiliate links. Most publishers make money off ads,
and that’s totally legit as long as you are not cheating.
Hazards: Thin, affiliate-heavy or ad-centered content